Improvement in work-holders



UNITED STATES AWILLIAM E. GILBERT, oE'nEEBY, CONNECTICUT.

IMPROVEMENT IN WORK-HOLDERS.

Specification forming part of Letters Patent No. 128,(l34, dated June 18, 1872.

To all whom it may concern:

Be it known that I, WILLIAM F. GILBERT, of Derby, in the county of New Haven and State of Connecticut, have invented a new Improvement in Sewing-Machine Work-Holder; and I do hereby declare the following, when taken in connection with the accompanying drawing and the letters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawing constitutes part of this specification, and represents, in-

Fgure l, a perspective View; Fig. 2, a side view, illustrating the operation; and in Fig. 3, a vertical section on line :c a'.

This invention is designed to facilitate that part of sewing in connection with a sewingmachine which must necessarily be done by hand, the object being the construction of a device, as an article of manufacture, which may be attached to a sewing-machine or other place where such device is required. My invention consists ina divided post or stud upon a base, one half of the post fixed to or made a part of the base, the second half pivoted to the rst so as to be turned away from the base, the axis or pivot being at right angles to the division of thepost, and provided witha spring, the tendency of which is to draw the swinging part down to the base, the lower end of this swinging part inclined so as to form a cam or clamp to grasp the work between the end of the said swinging part and the base, as more fully hereinafter described.

A is the Xed or stationary part, which is formed upon or made a part of the base B. C

is the second part or division of the post, co1'- responding, by preference, in form to the fixed part, so that the two set together form a perfect whole. These two parts are pivoted to get-her at a, the part G so as to be turned up, as denoted in Fig. 2, and its lower end chamfered, as at d. At the pivot a chamber is formed in the two parts A and C, and in this chamber a spring, j', is arranged, the tendency of which is to hold the part C down upon the base, the lower end of the part C and the base forming a cam or clamp, between which the work is to be grasped. I provide this device with a screw, D, or other suitable device for attaching it to the table.

To introduce thework turn the part C up, as denoted in broken lines, Fig. 2, insert the Work below it, and allow the part C to fall back onto the work, and the work is clamped firmly between the two.

I do not wish to'be understood as broadly claiming the cam or clamping device for holding the work.

I claim as my invention- As an article of manufacture, the hereindescribed work-holder, consisting of the fixed part A upon the base B, and the swinging or cam-shaped part C, pivoted to the part A at a., the two parts at that point forming a head, and chambered out to receive the spring f, the said spring acting to close the cam, in the manner described. -1

WILLIAM F. GILBERT.

Witnesses:

THALDEUS G. BIRDSEYE, JOSEPH ToMLINsoN. 

